The Immigration Act of 1790 states (in part): "…And the children of citizens of the United States, that may be born beyond sea, or out of the limits of the United States"
Pay close look at the 5th word 'citizens' Notice that it is plural? As in, more than one? Barry's father was NEVER a U.S. citizen of any kind. This act of 1790, about 3 years after the Constitution was 'framed' further proves that Barry can NOT be a NBC. The reiterated that to be a NBC...one had to have TWO citizen parents. Not one.
Yes, if they were born overseas. If they were born in the U.S., they were citizens from birth even if neither parent was a citizen.